According to Hasbro, the pack is Mace, a Clone Commander, and three SA Troopers.

Wow. 3 SA Troopers, kudos to Hasbro for choosing them. I had stopped buying any figures from the TSC line, but it seems I need to add this Battle Pack to my collection (and Mace Windu's ship, and the Hunt for Grievous BP, and the Gunship... Willpower be damned. )

I just noticed how the two newest CW vehicles have corresponding Battle Packs. The CW Hypori Gunship has the Hunt For Grievous BP, and the CW Mace Windu's Jedi Starfighter has the Mace Windu's Squadron BP.